Use of the repo not clear

[rkpagadala]

please update the readme to clarify the usage of the repo. If other repos/packages are more relevant point people there.
E.g. lot of cloud Apis are better accessed via cloud.gooogle.com/go https://pkg.go.dev/cloud.google.com/go

[codyoss]

This repo, today, holds the types used by the link you provided. Example: https://pkg.go.dev/cloud.google.com/go/secretmanager/apiv1#Client.CreateSecret.

The definition to call the APIs live in the other repo and the actual message types live here. We are in the midst of a migration and this will change within the next few months though.